Diomedes, Ythri, Dennitza And Merseia

The Man Who Counts: Nicholas van Rijn starts the industrial revolution on Diomedes purely as a way to get himself off the planet.

The People Of The Wind: The Terran Empire and the Domain of Ythri fight a war to adjust an interstellar frontier.

A Knight Of Ghosts And Shadows: Some disaffected Diomedeans want to leave the Empire and join the Domain. Aycharaych, working for the rival imperium of Merseia, exploits disaffection on Diomedes and also on Dennitza in order to divide the Empire.

In a future history series, later instalments build on earlier instalments but are set generations and centuries later.